Weather strip



M r h 1944- L A. MACKLANBURG WEATHER STRIP INVENTOR BY W ATTORNEY Filed Feb. 20, 1942 v a v E of? 5m E AT U H M L human-seam .UNITED STATES PATENT OFFICE JZZZfiZfIl'Z it? 2.1 31;.

(Cl. 2H9) 9 Claims.

My invention relates to weather strip for sealing between window sashes and window frames.

The prime object of the present invention is the provision of a weather strip for the p ses described, and which is so designed that it ma be extruded out of plastic materials.

So far as this inventor knows, or has been able to ascertain, present day weather stripping is almost exclusively formed by rolling sheet material such as copper alloy or steel into desired shapes. With the present shortage of such metals, due to war eflort, it is almost mandato y that some other expedient be found for reaching the desired sealing effect without the use of sheet metals. Within this end in view, I have discovered that certain weather strip shapes may be successfully extruded, and when so formed, the

strip will retain a requisite amount of its inherent resiliency to obtain the desired sealing result.

My experiments have shown that plastic ma terials such as Ethocel, Lumarith, Tenite #2, and other similar products are practical for my purposes.

Another object of the present invention is the provision of a weather strip which is so designed that a sliding window sashwill ride upon a substantial portion of the strip instead of against the side plates of the window frame.

Other purposes will be apparent from the fol- .lowing description when taken in connection with the accompanying one-sheet drawing, wherein:

Figure 1 is a transverse sectional view of one embodiment of my extruded weather strip, the sealing-elements thereof being shown in their normal or expanded positions;

Figure 2 is a similar view showing the strip of Figure 1 operatively installed;

Figure 3 is a fragmentary top view of the strip of Figure 1;

Figure 4 is a side view of the strip, looking from the line 4-4 of Figure 3 m the direction indl-j cated by the arrows;

Figures 5, 8, "l, 8 and 9 are perspective views, partially in section, of flve different embodiments of my weather strip;

Figure 10 is a transverse sectional view of parts in all of the figures wherein they appear.

In the drawing:

The reference numerals i indicate a or plate of a usual window frame to which is nailed or otherwise rigidly attached a usual blind stop strip 2 and a parting stop strip I which is spaced therefrom to form a usual sash channel 4. A usual sash member 5 is slidably disposed in the channel 4 in a conventional manner, and the member 5 is longitudinally grooved superfltti iially as indicated at 8 to receive my weather s p.

The structure thus far numerically described is old and usual to window and window sash mounting practices. and the window frame and mash structure is. not a part of the present inas will'be described hereinbelow. Formed integrally and co-extensive with the body portion it, is a detent portion H having a plurality of outwardly projecting serrations or ribs I! extending throughout the length thereof. Intermediate the portions 10 and II there are provided two oppositely disposed outwardly extending flanges l3 which act as stops to limit the extent to which the detent portion Ii may be inserted into a groove H in the sill I of the window frame. The flanges II extend throughout the entire length of the body II and detent H, and their function is clearly illustrated in Figure 2 of the drawing.

The free edge of the body portion II is provided with a co-extensive arcuate surfaced inttkral bead ll which is substantially as wide as the span of the flanges i3, and the bead i5 carries two resilient sealing wings it which are co-extensive therewith. The wings I. normally project outwardly from the body portion ill, but when the weather strip is once operativeiy inside sili reversely bent wing II of Figure 8 has been supassaars stalled, as illustrated in Figure 2, the wings. planted by a single unidirectional sealing wing due to their resiliency, may be slightly collapsed f'l somewhat similar to one of the wings it of ,towardthebodyportionilbytheircontact Figural. 4 v

with the sides of the groove I in the sash mem- Figure 12 shows an embodiment wherein the ber I. The inherent resiliency of the wings ll 5 body portion It has been eliminated and the causes them to press outwardly into sealing endetent portion II and flanges I: are instead gagement with the sides of the groove 8 and they made integral with two converging sealing wings thereby exclude ingress of the natural ele- 28 which combine to substantially form a V. ments such as rain, wind, etc The wings 28 of this embodiment may be com- In the present embodiment, the wings It m y 10 pressed toward each other to permit their entry be ccllal d inw rdly to the extent that he into the sash groove 8 in an obvious manner. will lie flatly against the sides of the body DOr- In Figure 13 is illustrated an embodiment tion II, and when 80 P i ne they lie with!" wherein one sealing wing it of Figure 1 has been the eonnnes of the flan es I and t e bead eliminated, and wherein one of the sto flanges Aplurallty of th se weather strips may therefore 15 is thereof has been extended to form a riding be bound tightly to ether wh Packaged for plate is for the sash. The plate 29 may, 11' depm n h b in 8 c mp t 9 sired. be provided with one or more longitudi- In th embodiment of e the body W- nally extending ribs, not shown, but similar in tion It and the fl n I! are identical with'the' nature to the ribs of Figure 10 or to the ribs weather strip of Figure 1, but the detent con- 20 1g of Figure 7 sists of a plane surfaced portion I|- having a I claim; co-extensive s r l f engagement within the 1. An extruded weather strip for sealing begfoove ll the 8111 The 1 normally tween adjacent faces of a window frame and it extends outwar l from the detent Portion sliding window sash, said strip including the at an acute angle, 80 that its edge portion will following continuous integral parts: a detent resiliently engage the side wall of the groove I I portion having a plurality of longitudinally to maintain the str p n- In this embodltending laterally projecting ribs, said detent porment the bead II of Figure 1 has been elimition adapted to be pressed into a groove in one nated, and outwardly extending arcuate sealin of said faces and the ribs adapted to frictionally wings I. hav en P ov directly 119 1 the engage a side wall of said groove; a rigid'body body I in li f t Straight Selling w I. portion co-extensive with said detent portion; of Figure i. This embodiment will not package and a resilient wing portion attached to the body as compac ly as the embodiment of Figure portion and extending in a lateral direction from but is practical from the standpoint of sea the same for sealing engagement with the other eiiiciency. said faces. 1

In the embodiment depicted in Figure 6, the 2. An' extruded weather strip for sealing bey p rti n the detent P i n I n h tween adjacent faces of a window frame and a stop flan es H are id nti al with th s of Figsliding window sash, said strip including the ure but in li u of he be I and wings I, 40 following continous integral parts: a detent porthere has been provided a single sealing wing tion having a plurality of longitudinally extend- The wing 10 has a reverse bend which ing laterally projecting ribs, said detent portion makes it capable of spanning a greater distance adapted to be pressed into a groove in one of said than the wings ll of Figure 1. If desired, anfaces and the ribs adapted to frictionally enother one of the sealing wings 2. may be progage a side wall of said groove; means for limitvided upon the opposite side of the body poring the distance to which said detent portion tion ll. may extend into said groove; a rigid body portion In the embodiment shown in Figure 7, them co-extensive with said detent portion: and a is provided a substantially flat body portion 2i resilient wing portion attached to the body porwith which the detent portion H is made intion and extending in a lateral direction from tegral. One side edge of the body portion II is the same for sealing engagement with the other extended outwardly to form a resilient sealing of said faces. I wing 22 which is formed to include spaced bear- 3. An extruded weather strip for sealing being ribs 23. The wing if of this embodiment tween adjacent faces of a window frame and a gives additional riding surface for the sash memsliding window sash the'rein, said strip including ber I, and its natural resiliency insures a proper the following continuous integral parts: a detent sealing eifect. P rtion having a plurality of longitudinally ex- The embodiment shown in' Figure 9 is identitending laterally projecting ribs, said detentporcal with that of Figure 5 except that the detent tion adapted to be pressed into a groove in one I l of Figure 1 is used instead of the detent I I of said faces and the ribs adapted to frictionally with its spur ll. 7 engage a side wall of said groove; a rigid body Figure 10 illustrates an embodiment of the portion in alignment with said detent portion weather strip which is identical with the emand adapted to extend into a groove in the bodiment of Figure 9, except that the stop flanges other of said faces; and a resilient wing portion ll of Figure 9 have been outwardly extended, attached to and extending laterally from said one to form a flat plate 24 and the other to form body portion for sealing engagement with a side an auxiliary sealing wing 25 having integral wall of the latter groove. ribs 2O similar to the ribs 23 of Figure 7. The 4. An extruded weather strip for sealing bewing II acts in the same manner as the wing 22 tween adjacent faces of a window frame and a of Figure 7. 7 sliding window sash therein, said strip including In Figure 11 is shown an embodiment of the the following continuous integral parts: a detent invention wherein the body portion i0, detent portion having a plurality of longitudinally exportion II, and the flanges II are identical with tending laterally projecting ribs, said detent porthe embodiment of Figure 8 except, that the tion adapted to be pressed into a groove in one 76 of said facm and the ribs adapted to frictionally engage a side wall of said groove; means for limiting the distance to which said detent portion may extend into said groove; a rigid body portion in alignment with said detent portion and adapted to extend into a groove in the other of of said faces and the ribs adapted to frictionally engage a side wall of said groove; a rigid body portion in alignment with said detent portion and adapted to extend into a groove in the other of said faces; a resilient wing portion extending laterally from said body portion for sealing engagement with a side wall'of the latter groove; and a laterally extending plate portion between the detent and body portions for limiting the distance to which said detent portion may extend into its groove.

6. Organization as described in claim 5, in which the plate portion is resilient, and is longitudinally corrugated to form a seal between said two faces.

'7. The combination with a window frame havthe other groove, including the following conv tinuous integral parts: a rigid detent portion having a plurality of longitudinally extending laterally projecting resilient ribs, said detent poring a longitudinally extending superficial groove tion adapted to be pressed into one of said grooves and to be held-therein by frictional engagement' of the ribs with the walls of the groove; a rigid body portion co-extensive with said detent portion; and a resilient wing portion located in the other of said' grooves and extending in a lateral direction from the body portion for sealing with a wall of said: other groove.

8. The combination with a window frame having a longitudinally extending superficial groove in its inner surface, and with a window sash slidably mounted in said frame and having a superficial longitudinally extending groove in its outer surface, said sash groove coinciding with the groove in the frame, of an extruded weather strip for disposition in one of said grooves for sealing with the other groove, including the following continuous integral parts: a rigid detent portion having a plurality of longitudinally extending laterally projecting resilient ribs, said detent portion adapted to be pressed into one of said grooves and to be held therein by frictional engagement of the ribs with the walls of the groove; a rigid body portion co-extensive with said detent portion; and a resilient wing portion located in the other of said grooves and extending in a lateral direction from the body portion for sealing with a wall of said other groove.

9. A weather strip for sealing between adjacent faces of a window frame and a sliding window sash, said strip including the following continuous integral parts a rigid detent portion having a plurality of longitudinally extending laterally.

, projecting ribs, said detent portion adapted to LOUIS A. MACKLANBIJJRG. 

